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STABILITY AND FORCED VIBRATIONS OF A 4-AXLED RAILWAY VEHICLE WITH ELASTIC CAR BODY

The problem of lateral stability and critical speed on the one hand and, on the other, the problem of forced vehicle oscillations are two main problems of a railway vehicle moving on a straight track. Assuming a linear system, an answer to the question of stability is obtained from the solution of the homogeneous equations of motion, i.e. from the eigenvalues. The linearized differential equations of motion of a four-axled railway vehicle with an elastic body are automatically formulated and solved with the aid of a general multiple-body program. The bogie is optimized for high critical speeds. The stability and the behavior of the complete vehicle when subject to harmonic and stochastic excitation due to track irregularities are examined.

Supplemental Notes:

Dynamics of Vehicles on Roads and on Tracks, Proceedings of the Vehicle System Dynamics (VSD) Symposium, 5th, and Int Union of Theor and Applied Mech (IUTAM) Symposium, 2nd, Technical University of Vienna, Austria, September 19-23, 1977.